package com.zzw.hj106;

import java.util.Scanner;

/**
 * @Project: hw_java
 * @Description: 字符逆序
 * @Author: zzw
 */

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        StringBuilder str = new StringBuilder(in.nextLine());
        String strReverse = String.valueOf(str.reverse());
        System.out.print(strReverse);
    }
}